龙门县永汉地热田地热资源储量计算及其开发利用建议

Geothermal Resource Reserves Calculation and Development and Utilization Suggestions of Yonghan Geothermal Field in Longmen County

永汉地热田位于广东省龙门县永汉镇,分为马星和隔陂2个热异常区,通过开展地质调查、地球物理勘探、地热钻探、降压试验和测温等工作,基本查明了永汉地热田的地热地质条件。计算出永汉地热田地热资源储量为9925 m^(3)/d,平均水温为57.8℃。本地热田地热水资源偏硅酸和氟浓度达到命名矿水浓度标准,可命名为硅水和氟水,具有医疗价值。提出本地热田地热资源开发利用方向以温泉理疗、洗浴为主,设计生产建设规模为8932 m^(3)/d,服务年限暂定为10 a。并划定出了本地热田三级保护区范围,为地热资源的开发利用与地质环境保护提供了地质依据。

The Yonghan Geothermal Field is located in Yonghan Town,Longmen County,Guangdong Province.It is divided into two thermal anomaly areas,Maxing and Gebei.Through geological survey,geo⁃physical exploration,geothermal drilling,depressurization test and temperature measurement,the geother⁃mal geological conditions of the Yonghan geothermal field were basically identified.It is calculated that the geothermal resource reserve of Yonghan geothermal field is 9925 m^(3)/d,and the average water temperature is 57.8°C.The concentration of metasilicic acid and fluorine in the geothermal water resources of the local hot field reaches the standard of named mineral water concentration,which can be named as silicon water and fluorine water,and has medical value.It is proposed that the development and utilization direction of geothermal resources in this geothermal field is mainly hot spring physiotherapy and bathing.The design,production and construction scale is 8932 m^(3)/d,and the service life is tentatively set as 10 a.The scope of the three-level protection zone of the local geothermal field is delineated,which provides a geological basis for the development and utilization of geothermal resources and the protection of geological environment.